Coin flip: flip the coin online
Flip the coin, let fate decide.
About the coin flip
Coin flip online is an exact 50/50 draw on every flip: neither the coin nor the history of past flips affects the next result. The most common myth (that after 5 heads in a row, tails is 'due') is false: every flip stays independent, with exactly a one-in-two chance for each side. Use coin flip to settle things without endless debate: who goes first, who picks, who buys the next round.
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How to play
Set the terms before flipping
Agree out loud what Heads means and what Tails means before flipping. If nobody remembers after the result, the flip is pointless.
Flip the coin
Hit Flip. The virtual coin animates and lands on Heads or Tails. Every flip is independent: the previous result never influences the next.
Apply the result immediately
The golden rule of a coin flip: you commit to it, no comfort re-flips. If you want best-of-three, set that rule before the first flip, not after.
When and why
Fair arbitration with no favourites
Who goes first? Who picks? Who chooses? The flip decides without anyone feeling shortchanged: a 50/50 result is incontestable.
Testing the streak effect
Flip ten times in a row and record the results: you'll see streaks (3 heads in a row, 4 tails) despite the same probability every flip. A hands-on illustration of real randomness.
Quick two-person decision
When two people face a choice and either option works for both, a coin flip skips the 'no you decide' loop that drags on for ten minutes.
Games and tournaments
Deciding who draws first in a game, the order of play in a tournament, or which side picks which half: the coin flip is the universal convention.
Tips, variants & rules
Understanding streaks
Landing Heads five times in a row doesn't mean Tails is 'due'. Every flip is independent: the probability stays exactly 50/50 even after a long streak.
Best-of-three: set the rule first
If you're playing best-of-three, announce it before the first flip. Changing the rules after an unwanted result kills the whole point of the flip.
Track your streak for statistical intuition
Flip 20 times and note each result. You'll see the 50/50 split approach theory progressively, but not in a straight line. Helpful for building intuition around the law of large numbers.
Pair with Yes or No
Coin Flip is ideal for arbitration that doesn't need a verbal question. If you want to anchor the flip to a real yes/no question, the Yes or No tool fits better.
Frequently asked questions
Which side is heads and which is tails?
'Heads' is the side showing a face or portrait; 'tails' is the opposite side, the reverse. On many coins heads shows a portrait and tails the value, but the convention can vary from coin to coin.
Why is it called 'heads or tails'?
'Heads' names the portrait side of the coin and 'tails' the reverse. The English terms come from the head depicted on one face; the practice of flipping a coin to decide goes back many centuries.
Can you win every time at coin flip?
No. Each flip is independent and gives roughly 50% to each side. No strategy guarantees a win: the previous result never influences the next.
What are the odds of getting heads twice?
Two heads in a row: 1/2 × 1/2 = 1/4, or 25%. Each extra flip halves the probability again: three heads is 1/8, or 12.5%.
Is the online coin flip really 50/50?
Yes. Every flip uses the browser's cryptographic random generator (Web Crypto), which gives Heads and Tails a strictly equal 50% probability, regardless of previous flips.
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